US Bridges

FM 1531 over Middle Sulphur River

Fair

Delta County, Texas · 2.10 MI S of SH 24 · Structure no. 010600238501002

Built
1960
65 years old
Condition
Fair
inspected February 2023
Type
Slab
Concrete
Length
150 ft
6 main spans
Daily traffic
188
2020 count
Owner
State
State Highway Agency

About this bridge

FM 1531 over Middle Sulphur River is a concrete slab carrying FM 1531 over Middle Sulphur River in Delta County, Texas. It was built in 1960, so it is 65 years old, older than the Texas average of 44.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 188 vehicles a day, roughly 9% of them trucks, projected to reach 350 by 2033. The structure is 150 ft (45.7 m) long and 26 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

CarriesFM 1531
CrossesMiddle Sulphur River
Location2.10 MI S of SH 24
RouteState Highway 1531
StateTexas
Coordinates33.28326, -95.8242
Functional classRural Minor Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54 US tons
Inventory rating32 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans6
Design loadOther
Structure length150 ft (45.7 m)
Longest span25 ft (7.6 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic188 (2020)
Projected traffic350 by 2033
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FM 1531 over Middle Sulphur River built?

It was built in 1960, making it 65 years old in 2025.

What condition is FM 1531 over Middle Sulphur River in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in February 2023.

How much traffic does FM 1531 over Middle Sulphur River carry?

About 188 vehicles per day (2020 count), of which roughly 9% are trucks.

How long is FM 1531 over Middle Sulphur River?

The structure is 150 ft (45.7 m) long with a longest span of 25 ft (7.6 m) and a deck 26 ft wide.

Who owns FM 1531 over Middle Sulphur River?

It is owned by the State Highway Agency.